Type-writing machine.



C. D. WALLACE. TYPE WRITING MACHINE. APPLIGkTION FILED MAY l0, 1904.

Patented N0v.1`5,191o.

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Patented Nov. 15, 1910.

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H15 TTEIRNEY a specification.'

' 1 UNITED STATES reif-ENT @time CASPER n. WALLACE.' oF BRIDGEPORT,certainement Assioiiron 'To YOST. WRIHNG MACHINE companions 1mois,l NEWYonx, 'A conPonATIon or `maw YORK.

' TYPE-warmste MAHINE.

' State of Connecticut, have invented certain new and usefulImprovements in Type- Writing Machines, of which the following' is l Myinvention relates to typeyvriting ma chines and more particularly to thecntriagel feed mechanism and to the'type of such machines. f

It 'is frequentlyV desirable to yvriteinatte'r. in larger charactersthan are ordinari-l. sed' in Writing machines and at thesame' time tohave the .machine .available for Writing in. smaller characters, sothatl part ofthe-inatcharacters and part inthe smaller. i

The' main object. of this invention lis toprovide a machine` in whichmatter koi' this general nature may be Written. .As herein shown, thetype characterswemployed are terwritten may, if necessary, be in the'Vlarger large capital letters and smaller capital letters, but I desireit to be understood that large and small characters of 'anyA other styleoi' kind may equally Wellfbe usedwithin the Scope of my invention.

The invention consists in certain featuresv of construction vandcombinations of parts,l

all as will be hereinafter set forth and particularly pointed out in theHsubjoined claims.y f 'A v ,l'n the accompanying drawings, the inventionshown applied to a full keyboardv typewriting machine having the'general i characteristics of that commercially known as the Yost No. 10typewriter, but I do not irish to be limited' tothe particular struc#tureA illustrated,as other kinds-or styles of rear sectiona View, takencentrally-ofv the machine, vshowing my invention applied thereto andwith such parts omitted as are immaterial.-

' `Fig. 2 is aplan view ofthe escapeinent mechi agiiism and itsregulatingdeyice, connec-` tion With such parts of the machine as are isal plan of the feed dogs and part of the necessary to give a correctunderstanding of the 4relationof the invention thereto'. Fig. 3

` escape Wheel showing the loose dog out of engagement andthrovvn backintocontact with the regulating stop, the latter being Specification ofLetters Patent. Application flied May 1o.

Patentes Nov. 15, 1910. i904. serial No. 207,271.

Shoyv'nrin positionjto permit of thef-eedof single tooth of the escapewheel. Fig. 4

' When the Ylatter is escape of two teet of 'the'esc'ape Wheel.

is a view similar to Fig. 3, but with the loose dog contacting with .theregulating stop piositioned to 'permit the Fig'. 'isnarai elevation ofthe regulating`f, stop` nieclianisinmounted on the base of thejv;

mcliiii'ndmof a mechanism, the reg ating stop lbeing shotvn thrown. intothe position of Fig. 3. F id. 6

- is a reary elevationof the lrefrulating mec a`- p nisin and of theback part oithebase of the machine on which it is mounted, theregulating stop being shov'vn' in thel position of 1g. 4. Fig. 7 .is aplan of the for'fvvard end of the Vtype guide, onev of the smaller char-Ouide in the print i p laan of the4 forward end of the type guide, one'of thel larger the print of thismachine, the iip er line bein"entirelyinlarge capitals and t le lower line aving an initial largecapital followed by small capitals corresponding to thefla'igecapitals'in 4the top line.

throughoutthe several views, wherein 1 is maintaining the corner posts3whic' in turn sustain a type ring 4. Bearing brackpart oftheescapernent u LikeI parts are designated by like miniera-ls the baseofthe machine,'2 the base "late ets 5, mounted on the type ring, supportWard end a guide .opening v11 Yfor the types.

pivotally supported on kthe carriage truck and has a bearing Wheel 14which runs on a frontrail `15, the latter in turn being sustained by thetypev ring 4. The ty fe ring* is provided with radial slots. i6 for tereception of driversy 17, each driver havinga hook-like projectiony 18bearing' :iifpon a' cir'- fthe type ring. The lower `end of each ldriver -vvays 6j, provided with oppositely faced A platen frame 12,Vcarrying the platen 13, is,

-Way 6 is a type guide 10, lhaving at its o'risupivoted toa typecarrierV 0r 'bar/.20,

which latter is pivotally connected at its lower end to the end of aguide link 21, saidguide link having at its other end a disklike portion22, which is held in a bearing formed of two circular plates 23 and 24suitably fastened together and supported centrally of the type barbasket.l

The type face 25 of the type block 26 on the end of each type' barnormally rests against an inking pad 27 supported on the type ring. vAsbest appears in Figs. 7 and 8, the type faces are of two kinds, whilethe type blocks are of uniform dimensions in orderto t the guide-opening11 in the center gui-de 10. Fig. 7 shows a type which occupies but halfthe width of the face, this half being the right hand half and the linesI 'of the rcharacter occupying the right half 'upper corner qf the facewhen the type is in printing position and is viewed from above andfromjhe front'of the machine, as is the zcase in Fig. 7. The type shownin Fig. 8 is one of the larger size and the size of the character islimited only by the boundaries of the face of the type block. Y i Thedriver 17 of each type 'carrier or bar 1s provided with an extension28,7which'is connected to the upper end of a connecting rod/29, thelower end whereof is pivotally yconnected to the upper arm of a bellcrank 30.the said bell crank in turn being pivoted -at 31 to astationary part of the machine.

The lower arm of the bell crank has pivoted 3 to it. the rear end ofadraw link 32, the forward end of which is pivoted to an actuating blade33having a stationary pivot 34. Integral with the blade 33 is a groovedarm 35 pivotally connected to which at, 36 is a key `stem 37 terminatingin a key capy 38 and connected to the lupper guide arm 39, which latterhas a stationary pivot 40. A contractile spring 41, having its endsconnected to the driver and connecting rod, assists in restoring thetype actuating mechanism to normal positlon after the type has beenactuated to print in the well-known manner of this style of machine.

The-drawings illustrate completely the typeactuating mechanism of onlyla single t pe'-, .but it will, of course, be understood that; themachine is provided with the usual complement of keys, types and typeconnecvstance by a set of keys which actuate types of the larger size,as shown inthe said Fig. 8.\ The lower section or half of the keyhoard,that usually occupied by the smallletter or lower case keys, is heredesigned Ato be occupied by keys actuating capital therewith during themovement of the type bar toward the printing point. This contact of theguide link with the universal bar 4raises the latter at one side andwith it a headed rod A13 which passes loosely through a4 central openingtherein. The lower end of the rod 43 isv adjustably connected with ablock 4l. which is pivoted at 45 to Van arm 46, which is the forward armof the dogl rocker. The latter comprises in addition to the forwardlyextending arm 46, a hub 7 from which the arm L16 extends, the rear armd8 and t-he downward arm 49, both likewise extending from the hub 47.The downwardly extending arm 49 carries a link 50 with which the drawlink of the spacing bar (not shown) connects. A rock shaft 5l passesthrough a central perforation in the hub 4T and is rigidly connected tothe latter by a screw 52. Therock shaft is seated in side bearingbrackets 53,'which are secured to the base plate 2. Extending rearwardlyfrom the rear arm 48, to which it is connected by screws 54, is a rigiddog of ordinary construction. Pivoted to a shouldered screw 56, which isscrewed into the rearward plate 48 from beneath and secured in place bya nut 57, is aloose or limber dog 58. The normal position of the looseor pivoted dog 58, that is, its position when in engagement with theescape wheel, is such that its working face is in the same verticalplane as the working face of the rigid dog This relation between the twodogs is secured and maintained by an adjustingscrew 59, which is screwedinto the side of the rearward arm 48 and against the end of which theleft hand face ofthe loose dog 58, considered from the front of themachine, normally bits. A wire spring 60, coiled around the lowerport`i`n of the pivotal shouldered' crew 5G, has one end secured to apin 6l in the under side of the rearward plate 48 and the other endsecured to a pin 62 in the nder side of the loose dog 58.v The spring 60tends to throw the losse dog 58 to the right, considered from the frontof the machine, when the said dog isreleased from the escape wheel andthis movement of the dog continues until checked by means to belpresently described. The loose dog 58 provided with a spuror finger 63,the purpose of which will subsequently appear, and the said dog normallyengages with the teeth 64 of a horizontally disposed escape wheel 65.The escape w'heel. as is seen ,in Fig. 1, lis integral with a carrier66, the depending stem 67 whereof extends through av sleeve 68 fixedwithin an opening in the base 'The carrier 66 operatively connects the'escape Wheel' with r the `vertical. shaft 69, `near 'the 'upper endlo'f which'is fixed a pinion y i YO'which meshes with the-carriage feedrack' 519thus connecting 'thefcarriage with 'the' esjicapem'entmechanism, y"all 4as in said Yost "machine g i y The "width :of one VsetVof characters -emplayed in this machine fis, 'as has beenpre 1Q viouslyset 'forth, twicefas reat as that of v` tl1eoti1"er"set emnloyedand 1twill therefore apparent that itwillfbe'necessary to vfeed *the"carriageftwice" as ffa'r when one of the Lrformer characters 'isprintedthan it will be whenonefdf the latter characters-'is 'printed "finjordertto" secure uniform spacing. Hence f it is fnecessary. to ffe'e theescape 'wheel AIAor fcrcular'frack I'f 'two teeth when one'o'fthe"larger characters is printed* and 'one tooth 4l'when jonefofthe'smaller "characters 1*is print- ".ed. 'The' mechanism to accomplish this`lref sultwillnow be described. l

` Referring more especiallyto Figs. 2,"51and .6, 71 designates avertical bearing post fixed "tofthe 'base "plate 2 at the'righthand side'ofthe machine 'and to :the rear: of the Areguflar keyboard. A rocker72is'pivoted at 73 in-'a'vertical slot 'or-'cutlaway 74 formed in,"thetopfdfj'the bearing post71. l A notch 75 -is formedcentrally of therocker 72 zso as to stra'ddle the post'71 when the rocker is in position'and the .sides ofthe said notch act as s'tops'to limitthe movement ofthe rocker about its pivot 73 in either directicui. vTo

l76 fisattachedfthe top ofwhic'h is ffurnished *with a letter "s in 'acorrespondingto *the character on;the typ'effa'ce shown in big. `l8.-Tivoted at78`to the rocker and'midway betweenthepivot andthe keybutton'7 7 is ljadepending link 79, thelower end of which isfpivoted atl80 to 'theleft hand'end-'of a lsxibstantially 'horizontalarm '81rigidly connectedfwith the fforwardend of arock shaft 82. 'The'rockshaftthasits hearings in right. angled brackets v83,suitably'attached as by screws S4 to the'base plate 2. The'i'ear end-dfthe*roc`k shaft 82'carriesa substantially "-l'vertica'larm`tijprovi'ded with la collar 86 and a'setscrew '87,whereby itis'attached to i the=rock shaft '82 at right angles -to the forwardarm81. Pivoted'tothe lower end of thearm"`-85at"88 isitheright hand end ofa sliding stopfbar A89, which terminates near the center 'of themachine, and, near-its left- `hand end,passes through a suitableonening. in a guide plate -90,"which is rigidlV attached 'by screws y91to ther right-hand bearingbracket 53; The said stop bar isv adapted toslide back and iforth in :the guide plate 90 above therightfhand'bearing-bracket 53 and in `the horizontal plane occupied bythe ioosedog4 58.

It Wilv be apparent ifrom the drawings-i 55 and description that-the'rock shaft 82 and at right iangles to -each other, constitute in #effect'a .bell crank, which is actuated,

foftheikev'buttons 76 or 77, torthe positions shown respectively 'inFigs. 45 and. These devices are maintained .in either of .fsaid :po-

'sitionsby a spring-stop 92'whichisattached -`by 'a screw 93Atofthebearing:post 71.and cosacts with the end of arm 82. -It ,willfurther be apparent that this :actuation ofthe bel-1` crank'fthroughAthe key buttons, .rocker -7 2 andfdepending yllink 79 willfcausetailongi.- it'ndinal 'movement of the sliding :"stop ibar "89,which, Vfasi-previously explained, .is in the fandwhich=serves asalstoptolimt thef'movev:ment `of said (dog about fits "pivot iin. ithe"directionTof 2the 'feathered larrows 1in Figs. s2,

.34and4. Y

' The-operationfof thefdevice-.may be'brie'fiy ,it be :desired 'to printfa 4riserles of =the :lar-ger characters, the key button -77 bearing thelarge .L -f.on` :its topis depressed.- "Considering the i'movements f ofthe* 'atsffas viewed i in fF'g. f6, this 'depression fo Vkeyfbutton 47 7llowers 'the Vdepending llink 79, :fdepresses ftheforward armV81,1turns'the rock shaft in the direction 'of the 'arrow .in Fig. 6(which fit will be Aremembered is a '.view Ifrom the :rearofthe,fmachine), .moves "the .rear arm 85 lto the Vleft about :its pivot sand draws 'the sliding `stop bar fin "the direction 'of `thevarvrowthereon in said liigure. The vend of the lstop lb'alr 89 "willthen .be vin the .position 'shownin Fig. li.v fIfnowtheikeySS (which itwill be remembered -is one vof 'the upper section ,of :keys whichactuates the :larger characters) be ndepressed, it will, :as Ais wellunderstood, actuate'theftype to zprint. During the Imovement; of "the"type bar toward the printing'pointthe link-21 is `raised into contactwith l'the iuniversalfbare, liftin .it at onev side j an'dfthrough .itthe center iro rearward' varm 48 about .its :rock :shaft 51. Thedepression of the rearward arm carries fthe frigid dog `55 down' intoaengagenient with' the tooth 'of -the escape Wheel and "frees the loose'doi `58 from direction offthe feathered arrow in 'Fig.4 until said docont-acts with `theendfof ythe. vsliding sto ar 89.'*Afterthe'imprint'of bar 'takes placefand Lin its l.travelFlo ack to--ward'the ink pad-27 .lowers the guide vlink 21, fpermitting 'the4universal bar. 42 f'to Areturn to 'normal position.' Thisfmo'vement ofthe universal' bar permits the downward 1ongitudnalmovement of the rod43, whichn turn'p'ermits the return :'of the forward arm through tthe1in-k v79 and rocker 72, lbyither y lsame lhorizontal 'Iplane .fas theLloose dog E38V the type, t e Ireturnimovement of t-hetype the arms-81andf85 rigidly mounted thereon fexplained las ffo11ows:--Supposing'first fthat n10' 43, Vlwhichvl in turnfwill :raise vthe Iforward arm46of the 'dog rocker-'and depress lthe said'tooth, :permitting the looseYog, under the impulse ofthe spring 60, tormove inthe 46 to normalposition and raises the rearward arm 48, lifting the rigid doo' out ofthe plane of the escape Wheel and bringing the loose dog 58 into theplane thereof. Under the tension of the usual carriage spring (notshown) the carriage is now drawn to the left and the'escape wheel,through carriage rack 9, pinion 70, shaft 69 and carrier 65, is turnedin the direction of the arrow in Fig. 4. Itwill be noted on inspectingsaid figure that though the loose dog 58 when in contact with theend ofthe stop 89 is outside the field or path of travel of the *teeth 64:,the finger 63 remains in the path of said teeth between the stoppingtooth and the next tooth and as the escape wheel 65 turns in thedirection of the arrow on the return movement of the dog rocker, thesaid next tooth, contacting with the linger 63, moves the dog 58 to theleft against the tension of its spring and brings the working face ofthe dog into the field of the second tooth from the stopping tooth,making this second tooth in turn the stopping tooth and allowing thecarriage tospace two teeth of the escape wheel, thus providing for thesuccessive `printing of all large capitals, as seen in the upper line ofFig. 9.k

If -n'ow it be desired to change from the larger to the smaller size ofletters, the key 7 6`is depressed until the side of the notch 75contacts with the bearing post 71 and the consequent movement of theparts, as viewed in Fig. 5, will be as follows ;-The depending link 79will be raised in the direction of its length, causing the rock shaft 82to turn in the direction of the arrow and moving the sliding stop rod 89in the direction of the arrow thereon in said figure. This causes-theend of the stop bar 89 to assume the position shown in Fig. 3 and when,as previously explained, one of thel lower banks of keys (not shown.) isdepressed and the loose dog 58 is moved by its spring 60 in thedirection of the arrow in the said Fig. 8, the said dog will contactwith the end of the sliding stop bar 89 before the working face of thedog has passed out of the path of the teeth 64 of the escape wheel.Consequently on the returnmovement'of the rocker the nexttooth to thestopping tooth, moving in the direction of the arrow, will contact withthe working face of the loose dog, moving the said dog to the leftagainst the tension of itsspring G0 until it contacts with the end ofthe adjusting screw 59, thus permitting the carriage to feed only onetooth of the'escape wheel. Thus it will be seen that either size of typemay-be used as desired and that by tirs-t depressing the proper iingerkey, that is, either key `76 or 77, the carriage will beV caused tospace the proper distance for the style of type required at the time. v

It will further be noted that 'at the beginning of a sentence when thekey 76, or in by the spacing made by the space key'as a4 preliminary tobeginning the sentence, if it be the second sentence or any followingone of a series of sentences. The same is true if it be the beginning ofa paragraph, since there is no writing to the -left of the initialcapital. In other words, the left half of the larger capital will occupya letter-space that would be utilizedl if a small capital wereprintedandthe right half of the larger capital will print in theletter-space which a small capital would impress if actuated, theinitial larger capital thus occupying a double letter-space and thesmall letter a single letter-space. as in the lower line of Fig. 9.

This invention is particularly applicable to the printing of labels,index, address or like cards or other similar matter, but', of course, Ido not desire to be limited to such use. The`work which may be done byemploying my invention is of an unusually clear and legible character,and wherever matter of such a sort is'desired to be printed thisinvention may bey employed to advantage. It will be seen that bymyinvention special means are provided for". regulating or varying thethrow of the feed dog, and consequently the feed of the carriage, atWill and Vindependently of the characterl keys or type actuatingmechanism; that such means may be regulated, from the front of themachine and in the vicinity of the keyboard, thereby facilitating theoperation which may be accomplished by depressing a finger key;`

that said means are attached to the framework of the machine and do notinterfere with any of the usual mechanism of the machine; that suchmeans may be regulated be-` fore the printing stroke is begun, thusproViding in advance for letter spacing suitable to the kind or size oftypes to be printed; that the characters of one set of types may be ofsubstantially the full dimensions of their type blocks, thecorresponding characters of the other set differing in dimensions fromthe first set and occupying only one corner of the faces of their't-ypeblocks; and that the type blocks are, and must of necessity be, ofuniform dimensions in order to coperate properlywith the center guide.

Various changes may be made in the construction as herein describedwithout departing from the ygist of my inventionl as sety forth in thesub-joined claims.

What I claim as new and desire to secure by Letters Patent, is

l. `In a typewriting machine having letter spacing mechanism appropriateto two degrees of spacing and to sets of types of di erent widths, thecombination-of a type guideprovided .with a guide opening, key

Icontrolled type carriers 'having a complete set of capital letter.types uniform in size,

adapted to one only .of said degrees of letter spacing, other keycontrolled' type carriers having a complete set of smaller capitalletter types uniform in size, the types of the second set beingdifferent in width from the n c orre sponding-types of the first set andoccopying only a part of the length of face of their type blocks, eachof said smaller capital letter types being arranged in one corner of itsassoclate type block, vand adapted to the other of said two degrees ofspacing, thetype blocks of all the types being of uniform size so thatsaid type blocks may properly V .engage with the guide opening 1n saidtype '2. -In a typewriting machine having two sets of types diering incharacter, the combination of a'carriage; carriage feeding lmechanismcomprising a toothed wheel and coperating dogsi one of said dogs beingiyotally mounte on its support; and means or regulating the extent ofmovement of the mechanism comprising a toothed Wheel and cooperatingdogs, one of said dogs being pivotally mounted on its support; and meansfor rerrulating `the extent of movement of said Feed dogon its pivot,said regulating means comprising a slide bar co-active with said dogs, apivoted key controlled rocker connected with said slide, stops forlimiting the movement of said'rocker in both directions, and a springdetent for maintaining said regulating means in one or another of aplurallty of 'adjusted positions.

Signed at Bridgeport, in the county of Fairfield, and State ofConnecticut, this 7th -day of May A. 1904.

CASPER D. WALLACE.

Witnesses:

BRUCE MILLS, HUGH M. ROBINSON.

a slide barl co-active with said

